2 * Copyright (C) 2005-2009 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file audiod.c the paraslash's audio daemon */
12 #include <openssl/rc4.h>
18 #include "audiod.cmdline.h"
23 #include "buffer_tree.h"
25 #include "grab_client.h"
26 #include "client.cmdline.h"
34 #include "write_common.h"
37 /** define the array of error lists needed by para_audiod */
39 /** define the array containing all supported audio formats */
40 const char *audio_formats
[] = {AUDIOD_AUDIO_FORMAT_ARRAY NULL
};
42 /** Defines how audiod handles one supported audio format. */
43 struct audio_format_info
{
44 /** pointer to the receiver for this audio format */
45 struct receiver
*receiver
;
46 /** the receiver configuration */
48 /** the number of filters that should be activated for this audio format */
49 unsigned int num_filters
;
50 /** Array of filter numbers to be activated. */
51 unsigned *filter_nums
;
52 /** Pointer to the array of filter configurations. */
54 /** the number of filters that should be activated for this audio format */
55 unsigned int num_writers
;
56 /** Array of writer numbers to be activated. */
58 /** pointer to the array of writer configurations */
60 /** do not start receiver/filters/writer before this time */
61 struct timeval restart_barrier
;
65 * para_audiod uses \p MAX_STREAM_SLOTS different slots, each of which may
66 * be associated with a receiver/filter/writer triple. This array holds all
67 * information on the status of these slots.
69 * \sa struct slot_info
71 struct slot_info slot
[MAX_STREAM_SLOTS
];
73 /** The vss status flags audiod is interested in. */
74 enum vss_status_flags
{
75 /** Whether the 'N' flag is set. */
76 VSS_STATUS_FLAG_NEXT
= 1,
77 /** The 'P' flag is set. */
78 VSS_STATUS_FLAG_PLAYING
= 2,
82 * The task for obtaining para_server's status (para_client stat).
84 * \sa struct task, struct sched.
87 /** The associated task structure of audiod. */
89 /** Client data associated with the stat task. */
90 struct client_task
*ct
;
91 /** Do not restart client command until this time. */
92 struct timeval restart_barrier
;
93 /** Last time we received status data from para_server. */
94 struct timeval last_status_read
;
95 /** The offset value announced by para_server. */
97 /** The length of the current audio file as announced by para_server. */
99 /** The start of the current stream from the view of para_server. */
100 struct timeval server_stream_start
;
101 /** The average time deviation between para_server and para_audiod. */
102 struct timeval sa_time_diff
;
103 /** Whether client time is ahead of server time. */
104 int sa_time_diff_sign
;
105 /** The 'P' and the 'N' flags as announced by para_server. */
106 enum vss_status_flags vss_status
;
107 /** Number of times the clock difference is to be checked. */
108 unsigned clock_diff_count
;
109 /** When to start the next check for clock difference. */
110 struct timeval clock_diff_barrier
;
111 /** Number of the audio format as announced by para_server. */
112 int current_audio_format_num
;
115 /** The array of status items sent by para_server. */
116 char *stat_item_values
[NUM_STAT_ITEMS
] = {NULL
};
119 * the current mode of operation of which can be changed by the on/off/cycle
120 * commands. It is either, AUDIOD_OFF, AUDIOD_ON or AUDIOD_STANDBY.
122 int audiod_status
= AUDIOD_ON
;
125 * the gengetopt args_info struct that holds information on all command line
128 struct audiod_args_info conf
;
130 static char *socket_name
;
131 static struct audio_format_info afi
[NUM_AUDIO_FORMATS
];
133 static struct signal_task signal_task_struct
, *sig_task
= &signal_task_struct
;
135 static struct status_task status_task_struct
;
138 * the task that calls the status command of para_server
140 * \sa struct status_task
142 static struct status_task
*stat_task
= &status_task_struct
;
143 static struct timeval initial_delay_barrier
;
146 * the task for handling audiod commands
148 * \sa struct task, struct sched
150 struct command_task
{
151 /** the local listening socket */
153 /** the associated task structure */
157 /** iterate over all supported audio formats */
158 #define FOR_EACH_AUDIO_FORMAT(af) for (af = 0; af < NUM_AUDIO_FORMATS; af++)
161 * get the audio format number
162 * \param name the name of the audio format
164 * \return The audio format number on success, -E_UNSUPPORTED_AUDIO_FORMAT if
165 * \a name is not a supported audio format.
167 int get_audio_format_num(const char *name
)
171 while (para_isspace(*name
))
173 FOR_EACH_AUDIO_FORMAT(i
)
174 if (!strcmp(name
, audio_formats
[i
]))
176 return -E_UNSUPPORTED_AUDIO_FORMAT
;
179 char *get_time_string(int slot_num
)
181 int ret
, seconds
= 0, length
;
182 struct timeval
*tmp
, sum
, sss
, /* server stream start */
183 rstime
, /* receiver start time */
184 wstime
, /* writer start time */
185 wtime
, /* now - writer start */
186 rskip
; /* receiver start - sss */
187 struct slot_info
*s
= slot_num
< 0? NULL
: &slot
[slot_num
];
190 if (audiod_status
== AUDIOD_OFF
)
192 if (!(stat_task
->vss_status
& VSS_STATUS_FLAG_PLAYING
)) {
193 if (stat_task
->length_seconds
) /* paused */
195 goto empty
; /* stopped */
197 if (audiod_status
== AUDIOD_ON
&& !s
)
200 * Valid status items and playing, set length and tmp to the stream
201 * start. We use the slot info and fall back to the info from current
202 * status items if no slot info is available.
204 length
= stat_task
->length_seconds
;
205 tmp
= &stat_task
->server_stream_start
;
206 if (s
&& s
->wns
) { /* writer active in this slot */
207 btr_get_node_start(s
->wns
[0].btrn
, &wstime
);
208 if (wstime
.tv_sec
!= 0) { /* writer wrote something */
209 if (s
->server_stream_start
.tv_sec
== 0) {
210 /* copy status info to slot */
211 s
->server_stream_start
= stat_task
->server_stream_start
;
212 s
->offset_seconds
= stat_task
->offset_seconds
;
213 s
->seconds_total
= stat_task
->length_seconds
;
215 length
= s
->seconds_total
;
216 tmp
= &s
->server_stream_start
;
219 if (stat_task
->sa_time_diff_sign
> 0)
220 tv_diff(tmp
, &stat_task
->sa_time_diff
, &sss
);
222 tv_add(tmp
, &stat_task
->sa_time_diff
, &sss
);
225 tv_diff(now
, &sss
, &diff
);
226 seconds
= diff
.tv_sec
+ stat_task
->offset_seconds
;
229 tv_diff(now
, &wstime
, &wtime
);
230 //PARA_CRIT_LOG("offset %d\n", s->offset_seconds);
231 seconds
= s
->offset_seconds
;
232 btr_get_node_start(s
->receiver_node
->btrn
, &rstime
);
233 ret
= tv_diff(&rstime
, &sss
, &rskip
);
234 if (ret
> 0) { /* audiod was started in the middle of the stream */
235 tv_add(&wtime
, &rskip
, &sum
);
236 seconds
+= sum
.tv_sec
;
238 seconds
+= wtime
.tv_sec
;
240 seconds
= PARA_MIN(seconds
, length
);
241 seconds
= PARA_MAX(seconds
, 0);
243 "%s%d:%02d [%d:%02d] (%d%%/%d:%02d)",
247 (length
- seconds
) / 60,
248 (length
- seconds
) % 60,
249 length
? (seconds
* 100 + length
/ 2) / length
: 0,
253 PARA_DEBUG_LOG("slot %d: %s\n", slot_num
, msg
);
256 return para_strdup(NULL
);
259 static int want_colors(void)
261 if (conf
.color_arg
== color_arg_no
)
263 if (conf
.color_arg
== color_arg_yes
)
265 if (conf
.logfile_given
)
267 return isatty(STDERR_FILENO
);
270 static void parse_config_or_die(void)
274 struct audiod_cmdline_parser_params params
= {
278 .check_ambiguity
= 0,
282 if (conf
.config_file_given
)
283 config_file
= para_strdup(conf
.config_file_arg
);
285 char *home
= para_homedir();
286 config_file
= make_message("%s/.paraslash/audiod.conf", home
);
289 ret
= file_exists(config_file
);
290 if (conf
.config_file_given
&& !ret
) {
291 PARA_EMERG_LOG("can not read config file %s\n", config_file
);
295 audiod_cmdline_parser_config_file(config_file
, &conf
, ¶ms
);
297 daemon_set_loglevel(conf
.loglevel_arg
);
304 static void setup_signal_handling(void)
306 sig_task
->fd
= para_signal_init();
307 PARA_INFO_LOG("signal pipe: fd %d\n", sig_task
->fd
);
308 para_install_sighandler(SIGINT
);
309 para_install_sighandler(SIGTERM
);
310 para_install_sighandler(SIGHUP
);
311 para_sigaction(SIGPIPE
, SIG_IGN
);
314 static void clear_slot(int slot_num
)
316 struct slot_info
*s
= &slot
[slot_num
];
318 PARA_INFO_LOG("clearing slot %d\n", slot_num
);
319 memset(s
, 0, sizeof(struct slot_info
));
323 static void close_receiver(int slot_num
)
325 struct slot_info
*s
= &slot
[slot_num
];
326 struct audio_format_info
*a
;
327 struct timeval restart_delay
= {0, 200 * 1000};
329 if (s
->format
< 0 || !s
->receiver_node
)
332 PARA_NOTICE_LOG("closing %s receiver in slot %d\n",
333 audio_formats
[s
->format
], slot_num
);
334 a
->receiver
->close(s
->receiver_node
);
335 btr_free_node(s
->receiver_node
->btrn
);
336 free(s
->receiver_node
);
337 s
->receiver_node
= NULL
;
338 tv_add(now
, &restart_delay
, &afi
[s
->format
].restart_barrier
);
341 static void writer_cleanup(struct writer_node
*wn
)
343 struct writer
*w
= writers
+ wn
->writer_num
;
346 btr_free_node(wn
->btrn
);
349 static void close_writers(struct slot_info
*s
)
351 struct audio_format_info
*a
;
357 if (a
->num_writers
== 0)
358 writer_cleanup(s
->wns
);
360 for (i
= 0; i
< a
->num_writers
; i
++)
361 writer_cleanup(s
->wns
+ i
);
367 static void _close_filters(struct slot_info
*s
)
370 struct audio_format_info
*a
= afi
+ s
->format
;
371 if (a
->num_filters
== 0)
373 for (i
= 0; i
< a
->num_filters
; i
++) {
374 struct filter_node
*fn
= s
->fns
+ i
;
375 struct filter
*f
= filters
+ fn
->filter_num
;
378 btr_free_node(fn
->btrn
);
384 static void kill_all_decoders(int error
)
389 struct slot_info
*s
= &slot
[i
];
390 struct audio_format_info
*a
;
395 for (j
= 0; j
< a
->num_writers
; j
++)
396 s
->wns
[j
].task
.error
= error
;
398 for (j
= 0; j
< a
->num_writers
; j
++)
399 s
->fns
[j
].task
.error
= error
;
400 if (s
->receiver_node
)
401 s
->receiver_node
->task
.error
= error
;
405 static int get_empty_slot(void)
416 if (s
->wns
|| s
->receiver_node
|| s
->fns
)
421 return -E_NO_MORE_SLOTS
;
425 * get the number of filters
427 * \param audio_format_num the number identifying the audio format
429 * \return the number of filters for the given audio format
433 int num_filters(int audio_format_num
)
435 return afi
[audio_format_num
].num_filters
;
438 static void open_filters(struct slot_info
*s
)
440 struct audio_format_info
*a
= afi
+ s
->format
;
441 struct filter_node
*fn
;
442 int nf
= a
->num_filters
;
443 struct btr_node
*parent
;
448 PARA_INFO_LOG("opening %s filters\n", audio_formats
[s
->format
]);
449 assert(s
->fns
== NULL
);
450 s
->fns
= para_calloc(nf
* sizeof(struct filter_node
));
451 parent
= s
->receiver_node
->btrn
;
452 for (i
= 0; i
< nf
; i
++) {
453 struct filter
*f
= filters
+ a
->filter_nums
[i
];
455 fn
->filter_num
= a
->filter_nums
[i
];
456 fn
->conf
= a
->filter_conf
[i
];
457 fn
->task
.pre_select
= f
->pre_select
;
458 fn
->task
.post_select
= f
->post_select
;
459 fn
->btrn
= btr_new_node(f
->name
, parent
, f
->execute
, fn
);
461 register_task(&fn
->task
);
463 PARA_NOTICE_LOG("%s filter %d/%d (%s) started in slot %d\n",
464 audio_formats
[s
->format
], i
, nf
, f
->name
, s
- slot
);
465 sprintf(fn
->task
.status
, "%s (slot %d)", f
->name
, s
- slot
);
469 static void open_writers(struct slot_info
*s
)
472 struct audio_format_info
*a
= afi
+ s
->format
;
473 struct writer_node
*wn
;
474 struct btr_node
*parent
= s
->fns
[a
->num_filters
- 1].btrn
;
476 assert(s
->wns
== NULL
);
477 s
->wns
= para_calloc(PARA_MAX(1U, a
->num_writers
)
478 * sizeof(struct writer_node
));
479 if (a
->num_writers
== 0)
480 setup_writer_node(NULL
, parent
, s
->wns
);
482 PARA_INFO_LOG("opening %s writers\n", audio_formats
[s
->format
]);
483 for (i
= 0; i
< a
->num_writers
; i
++) {
485 wn
->conf
= a
->writer_conf
[i
];
486 wn
->writer_num
= a
->writer_nums
[i
];
487 register_writer_node(wn
, parent
);
492 /* returns slot num on success */
493 static int open_receiver(int format
)
495 struct audio_format_info
*a
= &afi
[format
];
498 struct receiver
*r
= a
->receiver
;
499 struct receiver_node
*rn
;
500 const struct timeval restart_delay
= {2, 0};
502 ret
= get_empty_slot();
508 s
->receiver_node
= para_calloc(sizeof(struct receiver_node
));
509 rn
= s
->receiver_node
;
511 rn
->conf
= a
->receiver_conf
;
512 rn
->btrn
= btr_new_node(r
->name
, NULL
, NULL
, rn
);
515 btr_free_node(rn
->btrn
);
517 s
->receiver_node
= NULL
;
520 PARA_NOTICE_LOG("started %s: %s receiver in slot %d\n",
521 audio_formats
[s
->format
], r
->name
, slot_num
);
522 rn
->task
.pre_select
= r
->pre_select
;
523 rn
->task
.post_select
= r
->post_select
;
524 sprintf(rn
->task
.status
, "%s receiver node", r
->name
);
525 register_task(&rn
->task
);
529 PARA_ERROR_LOG("%s\n", para_strerror(-ret
));
530 tv_add(now
, &restart_delay
, &afi
[format
].restart_barrier
);
534 /* return: 0: Not running, 1: Running, -1: Running but eof (or error) */
535 static int receiver_running(int format
)
540 struct slot_info
*s
= &slot
[i
];
541 if (s
->format
!= format
)
543 if (!s
->receiver_node
)
545 if (s
->receiver_node
->task
.error
>= 0)
552 struct btr_node
*audiod_get_btr_root(void)
554 int i
, newest_slot
= -1;
555 struct timeval newest_rstime
= {0, 0};
558 struct slot_info
*s
= &slot
[i
];
559 struct timeval rstime
;
560 if (!s
->receiver_node
)
562 if (s
->receiver_node
->task
.error
< 0)
564 btr_get_node_start(s
->receiver_node
->btrn
, &rstime
);
565 if (newest_slot
>= 0 && tv_diff(&rstime
, &newest_rstime
, NULL
) < 0)
567 newest_rstime
= rstime
;
570 if (newest_slot
== -1)
572 return slot
[newest_slot
].receiver_node
->btrn
;
575 /* returns slot num on success. */
576 static int open_current_receiver(struct sched
*s
)
579 int ret
, cafn
= stat_task
->current_audio_format_num
;
581 if (cafn
< 0 || !stat_task
->ct
)
583 /* Do nothing if the 'N' flag is set or the 'P' flag is unset */
584 if (stat_task
->vss_status
!= VSS_STATUS_FLAG_PLAYING
)
586 ret
= receiver_running(cafn
);
587 if (ret
> 0) /* already running and not eof */
589 if (ret
< 0) { /* eof */
591 * para_server uses a zero start time during the announcement
592 * period, i.e. before it sends the first chunk. Wait until
593 * this period begins to avoid restarting the receiver that
594 * belongs to the file just completed.
596 if (stat_task
->server_stream_start
.tv_sec
!= 0)
597 sched_request_timeout_ms(100, s
);
599 if (tv_diff(now
, &afi
[cafn
].restart_barrier
, &diff
) < 0) {
600 if (tv_diff(&s
->timeout
, &diff
, NULL
) > 0)
606 /* start a new receiver */
607 return open_receiver(cafn
);
610 static unsigned compute_time_diff(const struct timeval
*status_time
)
612 struct timeval tmp
, diff
;
613 static unsigned count
;
614 int sign
, sa_time_diff_sign
= stat_task
->sa_time_diff_sign
;
615 const struct timeval max_deviation
= {0, 500 * 1000};
616 const int time_smooth
= 5;
620 sign
= tv_diff(status_time
, now
, &diff
);
621 // PARA_NOTICE_LOG("%s: sign = %i, sa_time_diff_sign = %i\n", __func__,
622 // sign, sa_time_diff_sign);
624 sa_time_diff_sign
= sign
;
625 stat_task
->sa_time_diff
= diff
;
630 int s
= tv_diff(&diff
, &stat_task
->sa_time_diff
, &tmp
);
631 if (tv_diff(&max_deviation
, &tmp
, NULL
) < 0)
632 PARA_WARNING_LOG("time diff jump: %lims\n",
636 sa_time_diff_sign
= tv_convex_combination(
637 sa_time_diff_sign
* time_smooth
, &stat_task
->sa_time_diff
,
638 count
> 10? sign
: sign
* time_smooth
, &diff
,
640 stat_task
->sa_time_diff
= tmp
;
641 PARA_INFO_LOG("time diff (cur/avg): %s%lums/%s%lums\n",
644 sa_time_diff_sign
? "+" : "-",
645 tv2ms(&stat_task
->sa_time_diff
)
648 stat_task
->sa_time_diff_sign
= sa_time_diff_sign
;
652 static int update_item(int itemnum
, char *buf
)
654 long unsigned sec
, usec
;
656 if (stat_task
->clock_diff_count
&& itemnum
!= SI_CURRENT_TIME
)
658 free(stat_item_values
[itemnum
]);
659 stat_item_values
[itemnum
] = para_strdup(buf
);
660 stat_client_write_item(itemnum
);
662 case SI_STATUS_FLAGS
:
663 stat_task
->vss_status
= 0;
664 if (strchr(buf
, 'N'))
665 stat_task
->vss_status
|= VSS_STATUS_FLAG_NEXT
;
666 if (strchr(buf
, 'P'))
667 stat_task
->vss_status
|= VSS_STATUS_FLAG_PLAYING
;
670 stat_task
->offset_seconds
= atoi(buf
);
672 case SI_SECONDS_TOTAL
:
673 stat_task
->length_seconds
= atoi(buf
);
675 case SI_STREAM_START
:
676 if (sscanf(buf
, "%lu.%lu", &sec
, &usec
) == 2) {
677 struct timeval a_start
, delay
;
678 delay
.tv_sec
= conf
.stream_delay_arg
/ 1000;
679 delay
.tv_usec
= (conf
.stream_delay_arg
% 1000) * 1000;
680 stat_task
->server_stream_start
.tv_sec
= sec
;
681 stat_task
->server_stream_start
.tv_usec
= usec
;
682 if (compute_time_diff(NULL
) > 2) {
683 if (stat_task
->sa_time_diff_sign
< 0)
684 tv_add(&stat_task
->server_stream_start
,
685 &stat_task
->sa_time_diff
, &a_start
);
687 tv_diff(&stat_task
->server_stream_start
,
688 &stat_task
->sa_time_diff
, &a_start
);
689 tv_add(&a_start
, &delay
, &initial_delay_barrier
);
693 case SI_CURRENT_TIME
:
694 if (sscanf(buf
, "%lu.%lu", &sec
, &usec
) == 2) {
695 struct timeval tv
= {sec
, usec
};
696 compute_time_diff(&tv
);
700 stat_task
->current_audio_format_num
701 = get_audio_format_num(buf
);
706 static int parse_stream_command(const char *txt
, char **cmd
)
708 char *p
= strchr(txt
, ':');
712 return -E_MISSING_COLON
;
714 FOR_EACH_AUDIO_FORMAT(i
) {
715 if (strncmp(txt
, audio_formats
[i
], strlen(audio_formats
[i
])))
720 return -E_UNSUPPORTED_AUDIO_FORMAT
;
723 static int add_filter(int format
, char *cmdline
)
725 struct audio_format_info
*a
= &afi
[format
];
726 int filter_num
, nf
= a
->num_filters
;
728 filter_num
= check_filter_arg(cmdline
, &a
->filter_conf
[nf
]);
731 a
->filter_nums
[nf
] = filter_num
;
733 PARA_INFO_LOG("%s filter %d: %s\n", audio_formats
[format
], nf
,
734 filters
[filter_num
].name
);
738 static int parse_writer_args(void)
742 struct audio_format_info
*a
;
744 nw
= PARA_MAX(1U, conf
.writer_given
);
745 PARA_INFO_LOG("maximal number of writers: %d\n", nw
);
746 FOR_EACH_AUDIO_FORMAT(i
) {
748 a
->writer_conf
= para_malloc(nw
* sizeof(void *));
749 a
->writer_nums
= para_malloc(nw
* sizeof(int));
752 for (i
= 0; i
< conf
.writer_given
; i
++) {
755 ret
= parse_stream_command(conf
.writer_arg
[i
], &cmd
);
760 wconf
= check_writer_arg(cmd
, &writer_num
);
765 a
->writer_nums
[nw
] = writer_num
;
766 a
->writer_conf
[nw
] = wconf
;
767 PARA_INFO_LOG("%s writer #%d: %s\n", audio_formats
[ret
],
768 nw
, writer_names
[writer_num
]);
776 static int parse_receiver_args(void)
778 int i
, ret
, receiver_num
;
780 struct audio_format_info
*a
;
782 for (i
= conf
.receiver_given
- 1; i
>= 0; i
--) {
783 char *arg
= conf
.receiver_arg
[i
];
784 char *recv_arg
= strchr(arg
, ':');
785 ret
= -E_MISSING_COLON
;
790 ret
= get_audio_format_num(arg
);
793 afi
[ret
].receiver_conf
= check_receiver_arg(recv_arg
, &receiver_num
);
794 if (!afi
[ret
].receiver_conf
) {
795 ret
= -E_RECV_SYNTAX
;
798 afi
[ret
].receiver
= &receivers
[receiver_num
];
800 /* use the first available receiver with no arguments
801 * for those audio formats for which no receiver
804 cmd
= para_strdup(receivers
[0].name
);
805 FOR_EACH_AUDIO_FORMAT(i
) {
807 if (a
->receiver_conf
)
809 a
->receiver_conf
= check_receiver_arg(cmd
, &receiver_num
);
810 if (!a
->receiver_conf
)
811 return -E_RECV_SYNTAX
;
812 a
->receiver
= &receivers
[receiver_num
];
820 static int init_default_filters(void)
824 FOR_EACH_AUDIO_FORMAT(i
) {
825 struct audio_format_info
*a
= &afi
[i
];
830 continue; /* no default -- nothing to to */
831 /* add "dec" to audio format name */
832 tmp
= make_message("%sdec", audio_formats
[i
]);
833 for (j
= 0; filters
[j
].name
; j
++)
834 if (!strcmp(tmp
, filters
[j
].name
))
837 ret
= -E_UNSUPPORTED_FILTER
;
838 if (!filters
[j
].name
)
840 tmp
= para_strdup(filters
[j
].name
);
841 ret
= add_filter(i
, tmp
);
845 PARA_INFO_LOG("%s -> default filter: %s\n", audio_formats
[i
],
852 static int parse_filter_args(void)
856 nf
= PARA_MAX(1U, conf
.filter_given
);
857 PARA_INFO_LOG("maximal number of filters: %d\n", nf
);
858 FOR_EACH_AUDIO_FORMAT(i
) {
859 afi
[i
].filter_conf
= para_malloc(nf
* sizeof(void *));
860 afi
[i
].filter_nums
= para_malloc(nf
* sizeof(unsigned));
862 if (!conf
.no_default_filters_given
)
863 return init_default_filters();
864 for (i
= 0; i
< conf
.filter_given
; i
++) {
865 char *arg
= conf
.filter_arg
[i
];
866 char *filter_name
= strchr(arg
, ':');
867 ret
= -E_MISSING_COLON
;
872 ret
= get_audio_format_num(arg
);
875 ret
= add_filter(ret
, filter_name
);
879 ret
= init_default_filters(); /* use default values for the rest */
884 static int parse_stream_args(void)
888 ret
= parse_receiver_args();
891 ret
= parse_filter_args();
894 ret
= parse_writer_args();
900 /* does not unlink socket on errors */
901 static int audiod_get_socket(void)
903 struct sockaddr_un unix_addr
;
906 if (conf
.socket_given
)
907 socket_name
= para_strdup(conf
.socket_arg
);
909 char *hn
= para_hostname();
910 socket_name
= make_message("/var/paraslash/audiod_socket.%s",
914 PARA_NOTICE_LOG("local socket: %s\n", socket_name
);
915 if (conf
.force_given
)
917 ret
= create_local_socket(socket_name
, &unix_addr
,
918 S_IRUSR
| S_IWUSR
| S_IRGRP
| S_IWGRP
| S_IWOTH
);
922 if (listen(fd
, 5) < 0) {
923 ret
= -ERRNO_TO_PARA_ERROR(errno
);
926 ret
= mark_fd_nonblocking(fd
);
931 PARA_EMERG_LOG("%s\n", para_strerror(-ret
));
935 static void signal_pre_select(struct sched
*s
, struct task
*t
)
937 struct signal_task
*st
= container_of(t
, struct signal_task
, task
);
938 para_fd_set(st
->fd
, &s
->rfds
, &s
->max_fileno
);
941 static void signal_post_select(struct sched
*s
, struct task
*t
)
943 struct signal_task
*st
= container_of(t
, struct signal_task
, task
);
945 if (!FD_ISSET(st
->fd
, &s
->rfds
))
948 st
->signum
= para_next_signal();
949 switch (st
->signum
) {
953 PARA_EMERG_LOG("terminating on signal %d\n", st
->signum
);
954 clean_exit(EXIT_FAILURE
, "caught deadly signal");
958 static void signal_setup_default(struct signal_task
*st
)
960 st
->task
.pre_select
= signal_pre_select
;
961 st
->task
.post_select
= signal_post_select
;
962 sprintf(st
->task
.status
, "signal task");
965 static void command_pre_select(struct sched
*s
, struct task
*t
)
967 struct command_task
*ct
= container_of(t
, struct command_task
, task
);
968 para_fd_set(ct
->fd
, &s
->rfds
, &s
->max_fileno
);
971 static void command_post_select(struct sched
*s
, struct task
*t
)
974 struct command_task
*ct
= container_of(t
, struct command_task
, task
);
975 static struct timeval last_status_dump
;
976 struct timeval tmp
, delay
= {0, 500 * 1000};
978 tv_add(&last_status_dump
, &delay
, &tmp
);
979 if (tv_diff(&tmp
, now
, NULL
) < 0) {
980 audiod_status_dump();
981 last_status_dump
= *now
;
984 if (!FD_ISSET(ct
->fd
, &s
->rfds
))
986 ret
= handle_connect(ct
->fd
);
988 PARA_ERROR_LOG("%s\n", para_strerror(-ret
));
991 static void init_command_task(struct command_task
*ct
)
993 ct
->task
.pre_select
= command_pre_select
;
994 ct
->task
.post_select
= command_post_select
;
996 ct
->fd
= audiod_get_socket(); /* doesn't return on errors */
997 sprintf(ct
->task
.status
, "command task");
1000 static void close_stat_pipe(void)
1004 client_close(stat_task
->ct
);
1005 stat_task
->ct
= NULL
;
1006 clear_and_dump_items();
1007 stat_task
->length_seconds
= 0;
1008 stat_task
->offset_seconds
= 0;
1009 stat_task
->vss_status
= 0;
1010 stat_task
->current_audio_format_num
= -1;
1011 audiod_status_dump();
1015 * close the connection to para_server and exit
1017 * \param status the exit status which is passed to exit(3)
1018 * \param msg the log message
1020 * Log \a msg with loglevel \p EMERG, close the connection to para_server if
1021 * open, and call \p exit(status). \a status should be either EXIT_SUCCESS or
1026 void __noreturn
clean_exit(int status
, const char *msg
)
1028 PARA_EMERG_LOG("%s\n", msg
);
1030 unlink(socket_name
);
1035 /* avoid busy loop if server is down */
1036 static void set_stat_task_restart_barrier(unsigned seconds
)
1038 struct timeval delay
= {seconds
, 0};
1039 tv_add(now
, &delay
, &stat_task
->restart_barrier
);
1042 static bool try_to_close_slot(int slot_num
)
1044 struct slot_info
*s
= &slot
[slot_num
];
1045 struct audio_format_info
*a
= afi
+ s
->format
;
1050 if (s
->receiver_node
&& s
->receiver_node
->task
.error
!= -E_TASK_UNREGISTERED
)
1052 for (i
= 0; i
< a
->num_filters
; i
++)
1053 if (s
->fns
&& s
->fns
[i
].task
.error
!= -E_TASK_UNREGISTERED
)
1055 for (i
= 0; i
< a
->num_writers
; i
++)
1056 if (s
->wns
&& s
->wns
[i
].task
.error
!= -E_TASK_UNREGISTERED
)
1058 PARA_INFO_LOG("closing slot %d\n", slot_num
);
1061 close_receiver(slot_num
);
1062 clear_slot(slot_num
);
1067 * Check if any receivers/filters/writers need to be started and do so if
1070 static void start_stop_decoders(struct sched
*s
)
1073 struct slot_info
*sl
;
1074 struct audio_format_info
*a
;
1077 if (try_to_close_slot(i
))
1079 // if (audiod_status != AUDIOD_ON ||
1080 // !(stat_task->vss_status & VSS_STATUS_FLAG_PLAYING))
1081 // return kill_all_decoders(-E_NOT_PLAYING);
1082 ret
= open_current_receiver(s
);
1086 a
= afi
+ sl
->format
;
1090 activate_grab_clients();
1091 btr_log_tree(sl
->receiver_node
->btrn
, LL_NOTICE
);
1095 /* restart the client task if necessary */
1096 static void status_pre_select(struct sched
*s
, struct task
*t
)
1098 struct status_task
*st
= container_of(t
, struct status_task
, task
);
1100 if (audiod_status
== AUDIOD_OFF
) {
1103 if (st
->ct
->task
.error
>= 0) {
1104 st
->ct
->task
.error
= -E_AUDIOD_OFF
;
1107 if (st
->ct
->task
.error
!= -E_TASK_UNREGISTERED
)
1110 st
->clock_diff_count
= conf
.clock_diff_count_arg
;
1115 if (st
->ct
->task
.error
< 0) {
1116 if (st
->ct
->task
.error
!= -E_TASK_UNREGISTERED
)
1121 if (st
->ct
->status
!= CL_RECEIVING
)
1123 ret
= for_each_stat_item(st
->ct
->buf
, st
->ct
->loaded
,
1126 st
->ct
->task
.error
= ret
;
1129 if (st
->ct
->loaded
!= ret
) {
1130 st
->last_status_read
= *now
;
1131 st
->ct
->loaded
= ret
;
1133 struct timeval diff
;
1134 tv_diff(now
, &st
->last_status_read
, &diff
);
1135 if (diff
.tv_sec
> 61)
1136 st
->ct
->task
.error
= -E_STATUS_TIMEOUT
;
1140 if (tv_diff(now
, &st
->restart_barrier
, NULL
) < 0)
1142 if (st
->clock_diff_count
) { /* get status only one time */
1143 char *argv
[] = {"audiod", "--", "stat", "-p", "-n=1", NULL
};
1145 PARA_INFO_LOG("clock diff count: %d\n", st
->clock_diff_count
);
1146 st
->clock_diff_count
--;
1147 client_open(argc
, argv
, &st
->ct
, NULL
);
1148 set_stat_task_restart_barrier(2);
1152 char *argv
[] = {"audiod", "--", "stat", "-p", NULL
};
1154 client_open(argc
, argv
, &st
->ct
, NULL
);
1155 set_stat_task_restart_barrier(5);
1158 free(stat_item_values
[SI_BASENAME
]);
1159 stat_item_values
[SI_BASENAME
] = para_strdup(
1160 "no connection to para_server");
1161 stat_client_write_item(SI_BASENAME
);
1162 st
->last_status_read
= *now
;
1164 start_stop_decoders(s
);
1167 static void init_status_task(struct status_task
*st
)
1169 memset(st
, 0, sizeof(struct status_task
));
1170 st
->task
.pre_select
= status_pre_select
;
1171 st
->sa_time_diff_sign
= 1;
1172 st
->clock_diff_count
= conf
.clock_diff_count_arg
;
1173 st
->current_audio_format_num
= -1;
1174 sprintf(st
->task
.status
, "status task");
1177 static void set_initial_status(void)
1179 audiod_status
= AUDIOD_ON
;
1180 if (!conf
.mode_given
)
1182 if (!strcmp(conf
.mode_arg
, "sb")) {
1183 audiod_status
= AUDIOD_STANDBY
;
1186 if (!strcmp(conf
.mode_arg
, "off")) {
1187 audiod_status
= AUDIOD_OFF
;
1190 if (strcmp(conf
.mode_arg
, "on"))
1191 PARA_WARNING_LOG("invalid mode\n");
1194 __noreturn
static void print_help_and_die(void)
1196 int d
= conf
.detailed_help_given
;
1197 const char **p
= d
? audiod_args_info_detailed_help
1198 : audiod_args_info_help
;
1200 printf_or_die("%s\n\n", AUDIOD_CMDLINE_PARSER_PACKAGE
"-"
1201 AUDIOD_CMDLINE_PARSER_VERSION
);
1202 printf_or_die("%s\n\n", audiod_args_info_usage
);
1204 printf_or_die("%s\n", *p
);
1205 print_receiver_helps(d
);
1206 print_filter_helps(d
);
1207 print_writer_helps(d
);
1211 static void init_colors_or_die(void)
1217 daemon_set_default_log_colors();
1218 daemon_set_flag(DF_COLOR_LOG
);
1219 for (i
= 0; i
< conf
.log_color_given
; i
++) {
1220 ret
= daemon_set_log_color(conf
.log_color_arg
[i
]);
1227 * the main function of para_audiod
1229 * \param argc usual argument count
1230 * \param argv usual argument vector
1232 * \return EXIT_SUCCESS or EXIT_FAILURE
1234 * \sa para_audiod(1)
1236 int main(int argc
, char *argv
[])
1239 static struct sched s
;
1240 struct command_task command_task_struct
, *cmd_task
= &command_task_struct
;
1241 struct audiod_cmdline_parser_params params
= {
1244 .check_required
= 0,
1245 .check_ambiguity
= 0,
1250 if (audiod_cmdline_parser_ext(argc
, argv
, &conf
, ¶ms
))
1252 HANDLE_VERSION_FLAG("audiod", conf
);
1253 /* init receivers/filters/writers early to make help work */
1257 if (conf
.help_given
|| conf
.detailed_help_given
)
1258 print_help_and_die();
1259 drop_privileges_or_die(conf
.user_arg
, conf
.group_arg
);
1260 parse_config_or_die();
1261 init_colors_or_die();
1262 init_random_seed_or_die();
1263 daemon_set_flag(DF_LOG_TIME
);
1264 daemon_set_flag(DF_LOG_HOSTNAME
);
1265 daemon_set_flag(DF_LOG_LL
);
1266 if (conf
.log_timing_given
)
1267 daemon_set_flag(DF_LOG_TIMING
);
1268 if (conf
.logfile_given
) {
1269 daemon_set_logfile(conf
.logfile_arg
);
1270 daemon_open_log_or_die();
1272 ret
= parse_stream_args();
1274 PARA_EMERG_LOG("%s\n", para_strerror(-ret
));
1277 log_welcome("para_audiod");
1278 server_uptime(UPTIME_SET
);
1279 set_initial_status();
1282 setup_signal_handling();
1283 signal_setup_default(sig_task
);
1285 init_status_task(stat_task
);
1286 init_command_task(cmd_task
);
1288 if (conf
.daemon_given
)
1291 register_task(&sig_task
->task
);
1292 register_task(&cmd_task
->task
);
1293 register_task(&stat_task
->task
);
1294 s
.default_timeout
.tv_sec
= 2;
1295 s
.default_timeout
.tv_usec
= 999 * 1000;
1298 PARA_EMERG_LOG("%s\n", para_strerror(-ret
));
1299 return EXIT_FAILURE
;